Spalding DeDecker Associates is hiring ~ click HERE for available positions to join our team!


In June, SDA employees participated in the Macomb County Public Works Commissioner's Office's River Day 2013. We helped remove tons of debris and trash from the North Branch of the Clinton River.

River Day 2013


Surveyor Ken Orban brings skill and nerves of steel to the layout of Cobo Center's atrium. It is winter, he is 90 feet in the air, and the "People Mover" travels between his aerial lift and the Detroit River.

Click HERE for more information on the wide range of technical expertise offered by SDA's survey department.

Detroit's Cobo Hall Glass Project


 60th Anniversary Seal

Spalding DeDecker Associates, Inc. is proudly celebrating its 60th anniversary.

Established by Vern Spalding and Frank DeDecker, SDA is an employee-owned firm with more than 90 employees.

SDA Founding Fathers

Click HERE for the SDA History.



Engineering Consultants | Infrastructure | Land Development | Surveying
Creating Infrastructure Solutions for Our Life & Planet